HDMI to VGA Adaptor Produces no Audio

XD3l

@Oneminde said in HDMI to VGA Adaptor Produces no Audio:

That's right. VGA does not have audio. DVI can have audio (depend on version) and SCART have audio. Since I am building a Retropie station, here is what I have selected as solution for my CRT TV.

I don't understand why this will not work. As far as the Pi is concerned, it is outputting to HDMI, audio and all. So this adapter should just do it's job and send the video signal to VGA, and the audio to AUDIO.

What I need to do is go VGA out so I can clone the display to two monitors.

misslehead3

@XD3l What we are doing is using a HDMI to VGA adapter for video and then we are just running the 3.5mm Audio Cable directly from the pi into our monitor. Is there a reason you cant do this.

senkun

@misslehead3 The way I see it, it's not that he can't use the 3.5mm jack out, it's just that he has a hdmi to vga adapter with audio out and he's wondering why it just won't work. So.

@XD3l There could be an issue with the adapter itself. One reason is that it could be a dud. Did you get the one from adafruit? Anyways, doesn't really matter, they're all clones of one or the other, all made in China. If from ada, try RMA it. You could pick up another and check, if both don't work then it'll be worth digging further.

Did you at least try these lines in your config.txt;

hdmi_force_hotplug=1
hdmi_drive=2 (I know you have this already)
config_hdmi_boost=4 (worth a try)
hdmi_force_edid_audio=1 (worth a try)

space invader

@Oneminde said in HDMI to VGA Adaptor Produces no Audio:

That's right. VGA does not have audio. DVI can have audio (depend on version) and SCART have audio. Since I am building a Retropie station, here is what I have selected as solution for my CRT TV.

Oneminde, UMSA Scart adaptor says:

Converts 15Khz RGBHV via a DSUB HD 15pin to 15Khz RGBS SCART signal

So, gertVGA outputs 15khz signal??

XD3l

@space-invader Too pricey, I'll just use a micro pc as a sub. The pie
shouldn't know it's not using HDMI anyhow.

a145

This post is deleted!

a145

This post is deleted!

g5k

@Oneminde has this worked out ok for you? I've got an umsa on its way.

In answer to another question raised in the thread about the 15khz h/v signal the umsa is expecting. The HDMI to VGA adaptors can pass 240p from the pi so should be okay. Some adaptors do this some don't.

I guess I'll know for sure soon, keen to hear how it has worked out. It's a shame there hasn't been a one step HDMI to RGB Scart adaptor made when I started looking around just assumed there would be but they only seem to exist with a composite Scart conversion.

Also wondering how well retropie adapts when you change the resolution to 240p. This post seems looks promising.

https://m.reddit.com/r/RetroPie/comments/49wkr9/240p_rgbs_guide_rgb_composite_sync/

asgalvan

@senkun said in HDMI to VGA Adaptor Produces no Audio:

@misslehead3 The way I see it, it's not that he can't use the 3.5mm jack out, it's just that he has a hdmi to vga adapter with audio out and he's wondering why it just won't work. So.

@XD3l There could be an issue with the adapter itself. One reason is that it could be a dud. Did you get the one from adafruit? Anyways, doesn't really matter, they're all clones of one or the other, all made in China. If from ada, try RMA it. You could pick up another and check, if both don't work then it'll be worth digging further.

Did you at least try these lines in your config.txt;

hdmi_force_hotplug=1
hdmi_drive=2 (I know you have this already)
config_hdmi_boost=4 (worth a try)
hdmi_force_edid_audio=1 (worth a try)

I had this issue that the OP had as well. I added:

hdmi_drive=2 (which I had already)
hdmi_force_edid_audio=1

and now my HDMI to VGA/Sound adapter is now outputting sound in RetroPie with my Zero. Thank you.

edmaul69

@XD3l i can confirm that what @asgalvan posted fixes this on this vga adapter.

javadood

I had the same problem and finally got it working by reading this: https://www.riscosopen.org/forum/forums/11/topics/1865

ssh into your pi
then do this: amixer cset numid=3 1

XD3l

@asgalvan said in HDMI to VGA Adaptor Produces no Audio:

@senkun said in HDMI to VGA Adaptor Produces no Audio:

@misslehead3 The way I see it, it's not that he can't use the 3.5mm jack out, it's just that he has a hdmi to vga adapter with audio out and he's wondering why it just won't work. So.

@XD3l There could be an issue with the adapter itself. One reason is that it could be a dud. Did you get the one from adafruit? Anyways, doesn't really matter, they're all clones of one or the other, all made in China. If from ada, try RMA it. You could pick up another and check, if both don't work then it'll be worth digging further.

Did you at least try these lines in your config.txt;

hdmi_force_hotplug=1
hdmi_drive=2 (I know you have this already)
config_hdmi_boost=4 (worth a try)
hdmi_force_edid_audio=1 (worth a try)

I had this issue that the OP had as well. I added:

hdmi_drive=2 (which I had already)
hdmi_force_edid_audio=1

and now my HDMI to VGA/Sound adapter is now outputting sound in RetroPie with my Zero. Thank you.

Bingo, and thank you!!!

ayskura

Fantastic News, where do I find the config.txt to add those lines? How do I change it? can I do it from Retropie as my raspberry pi has not internet connections? thank you

edmaul69

@ayskura with a keyboard on the pi press f4. It puts you in command line. Now type:

Sudo nano /boot/config.txt

Now scroll down to the bottom and add that stuff. Now press "ctr"l & "x". Then press"y". Then "enter".

ayskura

thank you so much I managed it! awesome it works!

joeyperoni

Yes updated the config file as per @XD3l post and the audio works great through the VGA adaptor. I prefer audio from HDMI as previously I find the 3.5mm output jack audio to have a slight white noise/hiss